/**
 * Copyright 2011 BlueOxygen Technology
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0 
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.meruvian.demo.devcamp.dao;

import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import org.meruvian.demo.devcamp.entity.Person;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;

/**
 * @author Dian Aditya
 * 
 */
@Repository
@Transactional(readOnly = true)
public class PersonDAO {
	@PersistenceContext
	private EntityManager manager;

	public Person getById(Long id) {
		return manager.find(Person.class, id);
	}

	public List<Person> getAll() {
		return manager.createQuery("SELECT p FROM Person p").getResultList();
	}

	@Transactional
	public void save(Person person) {
		manager.persist(person);
	}

	@Transactional
	public void update(Person person) {
		manager.merge(person);
	}

	@Transactional
	public void delete(Person person) {
		manager.remove(person);
	}
}
